G - Physics – 01 – B
Patent
G - Physics
01
B
G01B 11/275 (2006.01)
Patent
CA 2485543
The present invention is a gauge for checking a vehicle's wheel alignment for toe, camber, and caster. The gauge is used with the vehicle on the ground and its wheels on. The gauge comprises equal length extension rods, with magnets at each end, at least three of which are inserted through each wheel's vent holes or spokes. Their inboard ends magnetically attach to the disc brake rotor's surface behind the wheel, and they extend perpendicularly therefrom. Sheet steel plates rest on the ground beyond the bodywork and magnetically attach to the rod's outboard ends. Alignment arms magnetically attach to these plates. The arms extend from the plates and have lasers at their ends. The lasers aim perpendicularly across the vehicle at each other. Each arm has an abutment arm which contact's the leading edge of each wheel (or rotors, when the wheels are removed). Targets on each laser have center holes and a printed grid. The laser dots, if not on center, provide a first measurement, and the distance between the arms the second. The number obtained by dividing the first by the second, gives the SINE of the wheel's angle. Published SINE Tables (or a calculator), gives the wheel's angle. The gauge can be quickly mounted both vertically and horizontally for camber or toe measurements respectively. The gauge is attached to the rotor when the wheels are off, to direct alignment adjustments.
Mackelvie Winston R.
Na
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